Interestingly, those leaders that supported Bush in the leadup to the war in Iraq have all withstood challenges and succeeded, though Italy is hanging by a thread. The Paris-Berlin Axis, on the other hand, is in danger of collapse.
This has nothing to do with the EU referendum, per se, just an interesting side note.
Ah yes, especially the Spanish and Portuguese Conservatives.
Hmmm... I forgot our friends on the Iberian Peninsula. However, I think that the Spanish government fell more because of its handling of the bombing, rather than their involvment in Iraq--though you could say that the two are inextricably linked. As for the Portuguese, I must confess that I wasn't even aware that they were a right leaning government until the elections swept the left into power.
(Sorry Bono, we don't get much info on Portuguese politics in the States. No disrespect intended)